Male, age 68, not overweight, using statins and antacids. Diarrhea after eating... 5-6 episodes daily. Symptoms will last 1-2 weeks or longer, then cease for a while. Imodium is of limited help. 2014 colonoscopy was negative. Endoscopy showed GERD and beginnings of Barret s Esophagus. H Pylori infection was successfully treated. Diarrhea was minimal for 5-6 months. Recurrence of symptoms 10 days ago. Could this be an IBS issue? Shouldn t Imodium be more effective. I am 5 7 , weight is 150; non-smoker, no alcohol.